US 12,266,963 B2
Systems for analysis of vehicle battery health
Christopher Joseph Mendes, Kitchener (CA); and Michael Prem Mehta, Toronto (CA)
Assigned to Geotab Inc., Oakville (CA)
Filed by Geotab Inc., Oakville (CA)
Filed on Jul. 10, 2023, as Appl. No. 18/219,817.
Application 18/219,817 is a continuation of application No. 17/673,427, filed on Feb. 16, 2022, granted, now 11,742,681.
Claims priority of provisional application 63/220,653, filed on Jul. 12, 2021.
Prior Publication US 2023/0352956 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/392 (2019.01); B60L 58/12 (2019.01); B60L 58/16 (2019.01); H02J 7/00 (2006.01)
CPC H02J 7/005 (2020.01) [B60L 58/12 (2019.02); B60L 58/16 (2019.02); G01R 31/392 (2019.01); H02J 7/00036 (2020.01); H02J 7/0048 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
at least one processor;
at least one non-transitory processor-readable storage medium having processor-executable instructions stored thereon which when executed cause the at least one processor to:
process energy data for a plurality of energy-change events of a vehicle battery, wherein an energy capacity of the vehicle battery is represented by a total number of charge level units, and a charge level of the vehicle battery is represented by a proportion of the charge level units corresponding to a proportion of energy stored by the vehicle battery to energy capacity of the vehicle battery;
identify at least one qualified subgroup of energy-change events in the plurality of energy-change events, each qualified subgroup of energy-change events including at least one energy-change event;
calculate an average energy change of the vehicle battery corresponding to one charge level unit, where calculation of the average energy change is based on energy data for a subset of the plurality of energy-change events, wherein the subset of the plurality of energy-change events includes only qualified subgroups of energy-change events; and
determine health of the vehicle battery as a function of a difference between the average energy change of the vehicle battery corresponding to one charge level unit to a nominal energy change of the vehicle battery corresponding to one charge level unit.